public async Task Invoke(HttpContext context)
{
var request = context.Request;
var requestId = (
request.Headers.TryGetValue(HttpHeaderConstants.HTTP_HEADER_REQUEST_ID, out var requestIdValue) &&
requestIdValue.Count != 0 &&
Guid.TryParse(requestIdValue[0], out var requestIdFromHeader)
)
? requestIdFromHeader
: GuiDate.GenerateTimeBasedGuid();
var correlationId = (
request.Headers.TryGetValue(HttpHeaderConstants.HTTP_HEADER_CORRELATION_ID, out var correlationIdValue) &&
correlationIdValue.Count != 0 &&
Guid.TryParse(correlationIdValue[0], out var correlationIdFromHeader)
)
? correlationIdFromHeader
: requestId;
request.HttpContext.Items[HttpHeaderConstants.HTTP_HEADER_REQUEST_ID] = requestId;
request.HttpContext.Items[HttpHeaderConstants.HTTP_HEADER_CORRELATION_ID] = correlationId;
var response = context.Response;
response.Headers[HttpHeaderConstants.HTTP_HEADER_APP_NAME] = _applicationName;
response.Headers[HttpHeaderConstants.HTTP_HEADER_REQUEST_ID] = $"{requestId}";
response.Headers[HttpHeaderConstants.HTTP_HEADER_CORRELATION_ID] = $"{correlationId}";
response.Headers[HttpHeaderConstants.HTTP_HEADER_CLIENT_IP_ADRESSS] = $"{request.HttpContext.Items[HttpHeaderConstants.HTTP_HEADER_CLIENT_IP_ADRESSS]}";
await _next(context);
}
public Guid GetRequestIdFromRequest(HttpRequest request)
{
var errorMessage = $"{HttpHeaderConstants.HTTP_HEADER_REQUEST_ID} http request header is missing or not formatted correctly !";
Guid requestId;
if (request.Headers.TryGetValue(HttpHeaderConstants.HTTP_HEADER_REQUEST_ID, out var values))
{
var ids = values.ToArray();
if (ids.Length != 1 || !Guid.TryParse(ids[0], out requestId))
{
throw new HttpRequestException(errorMessage);
}
}
else
{
requestId = GuiDate.GenerateTimeBasedGuid();
request.Headers.Add(HttpHeaderConstants.HTTP_HEADER_REQUEST_ID, requestId.ToString());
}
return(requestId);
}